time and work efficiency type--5.1 II time and work ( three methods explain)🔥🔥✍️

#shorts
time and work--5
efficiency
for rrb ntpc or rrb group d type,#2022 ,#shorts ,#mathstricks ,#Studywithsmart,#rrbntpc ,#rrbgroupd ,#rrb_ntpc,#sscchsl ,#sscgd ,#sscmts,#kaushal_math